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Science Ch 14

QuestionAnswer
The item that disolves in a solution solute
The liquid in a solution solvent
The ability of a subatance to dissolve is described as solubility
If sugar disolves easier than sand, I would say that sugar is more soluble
Once a solution can't "fit" any more solute in it, we say it has reached saturation
A chemical change results in a compound
A physical change results in a mixture
A solution is a specific type of mixture
Pure substances are also called elements
Pure substances can be identified using the Periodic Table of the Elements
A substance with only one type of atom is a pure substance/ element
Can a mixture be separated physically? yes
Can a compound be separated physically? no
To separate a mixture, I need to know the physical properties of the components
Charachteristics of a compound include 1. 2 or more elements chemically combined2. a new substance is formed3. you can not separate out the substances you began with
Charachteristics of a mixture include 1. 2 or more substances physically combined2. can separate out the substances physically
If iron is in a mixture, what physical property can you use to separate and how can you get it out use the physical property of magnetism and get it out by using a magnet to attract it.
if you have a mixture of sand and water, what physical property can you use to separate it, and how can you get it out use the physical property that sand has a low solubility, and use a filter to get it out
if you have a solution of salt disolved in water, what physical property can you use to separate it, and how can you get it out use the physical properties of the states of matter of water, and add heat to evaporate the water from a liquid to a gas, which will leave the salt behind
reacts strongly with a metal acid
sour taste is evidence of acid
red litmus paper turning blue is evidence that the substance is a base
Created by: anoah
 

 



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